Crash when building with lastest rustc，but normal build with rustc 1.44.0-nightly (b2e36e6c2 2020-04-22) running on x86_64-pc-windows-gnu

[vmosone]

Code

Sorry，don't know which one，just use the latest rustc.

Meta

rustc --version --verbose:

rustc 1.46.0-nightly (0262de554 2020-06-07)
binary: rustc
commit-hash: 0262de554b4c4c5af346137bbb1664a3f6cf4df2
commit-date: 2020-06-07
host: x86_64-pc-windows-gnu
release: 1.46.0-nightly
LLVM version: 10.0

Error output

error: internal compiler error: src\librustc_mir\transform\generator.rs:706: Broken MIR: generator contains type [httparse::Header; _] in MIR, but typeck only knows about for<'r, 's, 't0, 't1, 't2, 't3, 't4, 't5, 't6, 't7, 't8, 't9, 't10, 't11, 't12, 't13, 't14, 't15, 't16, 't17, 't18, 't19, 't20, 't21> {std::future::ResumeTy, tcp::util::ContextHandle<connect::HttpConnect<S, W, <<P as virtual_host::VirtualHostPool<S, W>>::Host as service::ServiceFactory<S, W>>::Service>>, &'r mut tcp::util::ContextHandle<connect::HttpConnect<S, W, <<P as virtual_host::VirtualHostPool<S, W>>::Host as service::ServiceFactory<S, W>>::Service>>, std::option::Option<&'s mut connect::HttpConnect<S, W, <<P as virtual_host::VirtualHostPool<S, W>>::Host as service::ServiceFactory<S, W>>::Service>>, &'t0 mut connect::HttpConnect<S, W, <<P as virtual_host::VirtualHostPool<S, W>>::Host as service::ServiceFactory<S, W>>::Service>, [httparse::Header<'t1>; _], httparse::Request<'t2, 't3>, https::HeaderMap, &'t4 tcp::driver::SocketHandle<S>, tcp::driver::SocketHandle<S>, &'t5 W, W, impl futures::Future, (), std::option::Option<(httparse::Request<'t8, 't9>, https::HeaderMap, std::vec::Vec<u8>, usize)>, std::vec::Vec<u8>, usize, &'t10 https::HeaderMap, https::header::HeaderName, std::option::Option<&'t11 https::HeaderValue>, &'t12 https::HeaderValue, std::result::Result<&'t13 str, https::header::ToStrError>, &'t14 str, std::option::Option<&'t15 str>, &'t16 std::option::Option<&'t17 str>, std::string::String, &'t18 std::string::String, https::Version, &'t19 std::vec::Vec<u8>, std::ops::RangeFrom<usize>, [u8], &'t20 [u8], std::option::Option<request::HttpRequest<S, W>>, request::HttpRequest<S, W>, impl futures::Future}

Backtrace

thread 'rustc' panicked at 'Box<Any>', /rustc/0262de554b4c4c5af346137bbb1664a3f6cf4df2\src\libstd\macros.rs:13:23
stack backtrace:
   0:         0x694a73eb - mingw_set_invalid_parameter_handler
   1:         0x694d324c - mingw_set_invalid_parameter_handler
   2:         0x69498ff5 - mingw_set_invalid_parameter_handler
   3:         0x694abdb0 - mingw_set_invalid_parameter_handler
   4:         0x694aba39 - mingw_set_invalid_parameter_handler
   5:         0x6bb773e5 - mingw_set_invalid_parameter_handler
   6:         0x694ac455 - mingw_set_invalid_parameter_handler
   7:         0x6cfc51e5 - mingw_set_invalid_parameter_handler
   8:         0x6ce236d9 - mingw_set_invalid_parameter_handler
   9:         0x6ce23a62 - mingw_set_invalid_parameter_handler
  10:         0x6cce6487 - mingw_set_invalid_parameter_handler
  11:         0x6cce5340 - mingw_set_invalid_parameter_handler
  12:         0x6cce52e3 - mingw_set_invalid_parameter_handler
  13:         0x6cce635f - mingw_set_invalid_parameter_handler
  14:         0x6cce6307 - mingw_set_invalid_parameter_handler
  15:         0x6cf1bba4 - mingw_set_invalid_parameter_handler
  16:         0x6d0e3128 - mingw_set_invalid_parameter_handler
  17:         0x6d0e47c6 - mingw_set_invalid_parameter_handler
  18:         0x6d0e4a6b - mingw_set_invalid_parameter_handler
  19:         0x6e25afe1 - mingw_set_invalid_parameter_handler
  20:         0x6e4e5ce6 - mingw_set_invalid_parameter_handler
  21:         0x6e056835 - mingw_set_invalid_parameter_handler
  22:         0x6e2eb229 - mingw_set_invalid_parameter_handler
  23:         0x6e14a3f4 - mingw_set_invalid_parameter_handler
  24:         0x6df88524 - mingw_set_invalid_parameter_handler
  25:         0x6df85863 - mingw_set_invalid_parameter_handler
  26:         0x6dfbe8a9 - mingw_set_invalid_parameter_handler
  27:         0x6e4ea67a - mingw_set_invalid_parameter_handler
  28:         0x6e050655 - mingw_set_invalid_parameter_handler
  29:         0x6e2ee98d - mingw_set_invalid_parameter_handler
  30:         0x6e106820 - mingw_set_invalid_parameter_handler
  31:         0x6df936e8 - mingw_set_invalid_parameter_handler
  32:         0x6cd2c1d9 - mingw_set_invalid_parameter_handler
  33:         0x6cd2be2f - mingw_set_invalid_parameter_handler
  34:         0x6cd29764 - mingw_set_invalid_parameter_handler
  35:         0x6d0e3128 - mingw_set_invalid_parameter_handler
  36:         0x6d0e47c6 - mingw_set_invalid_parameter_handler
  37:         0x6d0e4a6b - mingw_set_invalid_parameter_handler
  38:         0x6d499891 - mingw_set_invalid_parameter_handler
  39:         0x6d57a256 - mingw_set_invalid_parameter_handler
  40:         0x6d6654b2 - mingw_set_invalid_parameter_handler
  41:         0x6d680efc - mingw_set_invalid_parameter_handler
  42:         0x6d625890 - mingw_set_invalid_parameter_handler
  43:         0x6d4b6e11 - mingw_set_invalid_parameter_handler
  44:         0x6d4ba8fb - mingw_set_invalid_parameter_handler
  45:         0x6d69a979 - mingw_set_invalid_parameter_handler
  46:         0x6d4bf4b0 - mingw_set_invalid_parameter_handler
  47:         0x6d5e841d - mingw_set_invalid_parameter_handler
  48:         0x6d4d89b3 - mingw_set_invalid_parameter_handler
  49:         0x6e251531 - mingw_set_invalid_parameter_handler
  50:         0x6be5dd76 - mingw_set_invalid_parameter_handler
  51:         0x6bd6a480 - mingw_set_invalid_parameter_handler
  52:         0x6bd54a07 - mingw_set_invalid_parameter_handler
  53:         0x6bb7bea9 - mingw_set_invalid_parameter_handler
  54:         0x6bbf780e - mingw_set_invalid_parameter_handler
  55:         0x6bb79b2c - mingw_set_invalid_parameter_handler
  56:         0x6bbaa474 - mingw_set_invalid_parameter_handler
  57:         0x6bb62c3a - mingw_set_invalid_parameter_handler
  58:         0x694ba9d8 - mingw_set_invalid_parameter_handler
  59:     0x7ff9a52e7974 - mingw_set_invalid_parameter_handler
  60:     0x7ff9a5c3a271 - mingw_set_invalid_parameter_handler

[mati865]

@vmosone could you share your code that caused the issue or a list of steps to reproduce the crash?

[vmosone]

I try, but it may take some time.

[mati865]

@vmosone this issue should no longer happen, could you verify it?